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My drivers window blows bubbles too. I see a recall in our future...Yes, driver & passenger side - right in the corner by the mirror. I first noticed this when going through an automatic car wash with the fan on high - it would blow bubbles in both spots! Mine is a 2013 PP. Not sure if any changes were made to the 15's.
My wife drives a Volvo XC90 V8 Sport. One of her first comments was how much wind noise there was in the cabin of the SHO compared to her car. She immediately pointed out the air leaks, then I told her about the car wash incident. Pretty funny, but apples to oranges in build quality between the two.
Maybe the seals are drying out? In that case, clean with soap & water, then if necessary, lubricate, preferably with a silicone-based product applied sparingly. Meguiars Vinyl/Rubber Conditioner might work, 303 is another one you can try.